Решить уравнения: 2 1/3x = 3,6 * 7/18 и 1 2/13 * (3/7x - 5/6) = 2,5

2 1/3x = 3,6 * 7/18
7/3х=0,2*7
7/3х=1,4
х=1,4:7/3=1,4*3/7=0,2*3=0,6

1 2/13 * (3/7x - 5/6) = 2,5
15/13 * (3/7x - 5/6) = 2,5
3/7x - 5/6 = 2,5:15/13
3/7x - 5/6 = 2,5*13/15
3/7x - 5/6 = 0,5*13/3
3/7x - 5/6 = 6,5/3
3/7x - 5/6 = 65/30
3/7x - 5/6 = 13/6
3/7х=13/6+5/6
3/7х=18/6
3/7х=3
х=3:3/7=3*7/3=7